Refrigerator, control method of refrigerator, and storage medium

Abstract

This application provides an embodiment of a refrigerator, a refrigerator control method, and a storage medium, belonging to the field of household appliance technology. It aims to solve the technical problems of increased load and high noise levels generated by the vacuum pump in related technologies. The control module is configured as follows: when the crisper drawer changes from a pulled-out state to a pushed-in state, it controls the vacuum device to extract air from the storage space; based on the current air pressure in the storage space, it reduces the current duty cycle of the vacuum device; it acquires a first vibration frequency of the vacuum device and a second vibration frequency of the refrigerator body; if the ratio of the first vibration frequency to the second vibration frequency is within a set range, it increases the current duty cycle of the vacuum device. This refrigerator can reduce the noise generated by the vacuum pump.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a refrigerator, a refrigerator control method, and a storage medium. Background Technology

[0002] A refrigerator is a common household appliance that keeps food or other items at a constant low temperature. A refrigerator consists of a cabinet, a vacuum pump, and a crisper drawer inside the cabinet. The vacuum pump draws air out of the crisper drawer, creating a negative pressure environment to preserve food.

[0003] However, during the process of evacuating the food storage drawer using a vacuum pump, as the working time of the vacuum pump increases, the air pressure in the storage space gradually decreases, the load on the vacuum pump also gradually increases, and the noise generated by the vacuum pump is loud. Summary of the Invention

[0004] This application provides a refrigerator, a refrigerator control method, and a storage medium, which can solve the technical problem that as the working time of the vacuum pump increases, the air pressure in the storage space gradually decreases, the load on the vacuum pump gradually increases, and the noise generated by the vacuum pump is high.

[0005] In a first aspect, embodiments of this application provide a refrigerator, comprising:

[0006] Box;

[0007] A food storage drawer is provided in the refrigerator body, and the food storage drawer has a push-in state and a pull-out state; when the food storage drawer is in the push-in state, the accommodating space of the food storage drawer is in a sealed state; when the food storage drawer is in the pull-out state, the food storage drawer can move relative to the refrigerator body.

[0008] An air extraction device is connected to the receiving space, and the air extraction device is used at least to extract air from the receiving space.

[0009] The control module is configured as follows:

[0010] When the food storage drawer changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the containing space.

[0011] Based on the current air pressure in the containment space, reduce the current duty cycle of the air extraction device;

[0012] Obtain the first vibration frequency of the air extraction device and the second vibration frequency of the housing;

[0013] If the ratio of the first vibration frequency to the second vibration frequency is within a set range, the current duty cycle of the air extraction device is increased.

[0014] By adopting the above technical solution, when the air extraction device extracts air from the storage space of the fresh food drawer, the air pressure in the storage space gradually decreases. As a result, if the current duty cycle of the air extraction device remains unchanged, the fresh food drawer and the inner liner may deform, causing the noise generated by the fresh food drawer to increase continuously. Therefore, the current duty cycle of the air extraction device can be reduced according to the current air pressure in the storage space, thereby reducing the noise generated by the air extraction device.

[0015] For example, a first vibration frequency of the vacuum device and a second vibration frequency of the refrigerator body are obtained. If the ratio of the first vibration frequency to the second vibration frequency is within a set range, resonance may easily occur between the vacuum device and the refrigerator body, thereby further increasing the noise generated by the vacuum device and the refrigerator body. In other words, when the current duty cycle of the vacuum device decreases to a certain value, resonance may occur between the vacuum device and the refrigerator body. Therefore, the current duty cycle of the vacuum device can be increased to reduce the possibility of resonance between the vacuum device and the refrigerator body, and further reduce the noise generated by the vacuum device.

[0016] Secondly, this application provides a refrigerator control method in which, when the fresh-keeping drawer changes from a pulled-out state to a pushed-in state, the air extraction device is controlled to extract air from the accommodating space.

[0017] Based on the current air pressure in the containment space, reduce the current duty cycle of the air extraction device;

[0018] Obtain the first vibration frequency of the air extraction device and the second vibration frequency of the housing;

[0019] If the difference between the first vibration frequency and the second vibration frequency is less than a set range, the current duty cycle of the pumping device is increased.

[0020] Thirdly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a computer, are used to implement the method described in the second aspect.

[0021] The computer-readable storage medium provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here.

[0022] Fourthly, this application provides a computer program product, including a computer program, which, when executed by a computer, is used to implement the method described in the second aspect.

[0023] The computer program product provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here. Attached Figure Description

[0024] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of the structure of the food storage drawer and the cabinet in the pushed-in state according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of the food storage drawer and the cabinet in the pulled-out state according to an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the structure of the food storage drawer and the cabinet from another perspective of an embodiment of this application, showing the food storage drawer in the pulled-out state.

[0028] Figure 4 This is a schematic diagram of the control flow of the air extraction device when the food preservation drawer is in the pushed-in state, according to an embodiment of this application.

[0029] Figure 5 This is a schematic diagram of the control module and the air extraction device of the refrigerator according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the control flow of the air extraction device when the food preservation drawer changes from the pulled-out state to the pushed-in state according to an embodiment of this application.

[0031] Figure 7 This is a flowchart illustrating the refrigerator control method according to an embodiment of this application;

[0032] Figure 8 This application defines two operating modes for the air extraction device in the refrigerator according to the embodiments of this application;

[0033] Figure 9 This is a schematic diagram illustrating the process of obtaining the reference time and preset rate in an embodiment of this application;

[0034] Figure 10 This is a flowchart illustrating the control method for a refrigerator in holiday mode and daily mode according to an embodiment of this application.

[0035] Figure 11 This is a schematic diagram of the process of controlling the air extraction device to extract air from the accommodating space in an embodiment of this application;

[0036] Figure 12 This is a schematic diagram illustrating the process of controlling the air extraction device to extract air from the accommodating space according to another embodiment of this application.

[0037] Figure 13 This is a flowchart illustrating another control method for the food storage drawer according to an embodiment of this application;

[0038] Figure 14 This is a schematic flowchart of the control method for the refrigerator provided in this application embodiment, which involves obtaining the first vibration frequency of the air extraction device and the second vibration frequency of the cabinet.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Inner box; 200. Food storage drawer; 210. Storage space. Detailed Implementation

[0041] As described in the background section, in related technologies, a refrigerator includes a cabinet and a crisper drawer disposed within the cabinet. The crisper drawer forms a negative pressure storage space to preserve food. However, although the crisper drawer is less prone to bacterial growth than a normal pressure drawer, bacteria can still grow in it. Furthermore, because food is placed inside, the crisper drawer is more susceptible to the growth of bacteria and other microorganisms, thus affecting the preservation effect of the food.

[0042] A refrigerator is a common household appliance that keeps food or other items at a constant low temperature. A refrigerator consists of a cabinet, a vacuum pump, and a crisper drawer inside the cabinet. The vacuum pump draws air out of the crisper drawer, creating a negative pressure environment to preserve food.

[0043] However, when the vacuum pump evacuates the crisper drawer, if too much food is placed inside (such as when a large number of beverages are placed inside the crisper drawer in fresh food mode, resulting in a full load), the evacuation space inside the crisper drawer becomes smaller. The evacuation power of the vacuum pump remains unchanged, but the evacuation rate increases, which in turn increases the noise generated by the vacuum pump.

[0044] The system lacks a detection or adjustment mechanism to adjust the vacuuming time in real time. This means that under full load, the system cannot reduce the vacuuming time in time, and the fixed vacuuming time cannot adapt to pressure changes under different load conditions. As a result, in some situations (such as when fully loaded), the pressure value inside the refrigeration drawer may be too low, which may damage the pressure shell of the refrigeration drawer.

[0045] In view of this, in the refrigerator of this application embodiment, after food is placed in the storage space, the fresh-keeping drawer can be switched from the pulled-out state to the pushed-in state, and the air extraction device is controlled to extract air from the storage space so that the air in the storage space can be discharged to the outside of the fresh-keeping drawer, so that the air pressure in the storage space is lower than or equal to the preset pressure, and the storage space can form a negative pressure state, thereby preserving food through the storage space in the negative pressure state.

[0046] When the air extraction device draws air from the storage space of the refrigerator drawer, the air pressure in the storage space gradually decreases. As a result, if the current duty cycle of the air extraction device remains unchanged, the refrigerator drawer and the inner liner may deform, causing the noise generated by the refrigerator drawer to increase continuously. Therefore, the current duty cycle of the air extraction device can be reduced according to the current air pressure in the storage space, thereby reducing the noise generated by the air extraction device.

[0047] For example, a first vibration frequency of the vacuum device and a second vibration frequency of the refrigerator body are obtained. If the ratio of the first vibration frequency to the second vibration frequency is within a set range, resonance may easily occur between the vacuum device and the refrigerator body, thereby further increasing the noise generated by the vacuum device and the refrigerator body. In other words, when the current duty cycle of the vacuum device decreases to a certain value, resonance may occur between the vacuum device and the refrigerator body. Therefore, the current duty cycle of the vacuum device can be increased to reduce the possibility of resonance between the vacuum device and the refrigerator body, and further reduce the noise generated by the vacuum device.

[0048] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0049] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0050] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0051] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] Reference Figures 1-5 This application provides a refrigerator, including a cabinet, which includes a top and a bottom arranged along the length direction. The interior of the cabinet can form a storage compartment, which may include a refrigerator compartment and a freezer compartment, so as to use the refrigerator compartment and the freezer compartment to store food in cold or cold storage.

[0056] The refrigerator of this application may include a door. The door may include an inner liner and an outer shell. The door can at least be used to open and close the storage space. The door can be used to form a relatively enclosed space in the refrigerator, thereby enabling the storage compartment to maintain a relatively constant temperature and reducing the rate of temperature rise in the storage compartment.

[0057] In some possible implementations, the inner liner 100 within the housing defines a mounting cavity with an opening on one side. The mounting cavity may be located in a storage compartment, for example, in a refrigerator compartment, or it may be located in a freezer compartment.

[0058] For example, a refrigerator may include a crisper drawer 200. The crisper drawer 200 is movably disposed within a mounting cavity. When the crisper drawer 200 is in the pushed-in state, it is located within the mounting cavity and can form a negative pressure accommodating space 210, thereby accommodating food items that need to be preserved. When the crisper drawer 200 is in the pulled-out state, it is movable relative to the refrigerator body, allowing it to move into or out of the mounting cavity for easy access to food items.

[0059] In some possible implementations, the food storage drawer 200 may include a main body, which may be a rectangular box structure with an opening on the top surface. An accommodating space 210 is formed inside the main body, which may be a cavity structure with an opening on the top surface. Food can be placed into the accommodating space 210 through the top opening of the accommodating space 210, or food can be taken out of the accommodating space 210 through the top opening of the accommodating space 210.

[0060] For example, the food storage drawer 200 may include a drawer door. The drawer door may be located at the front end of the main body, and the drawer door may be used to push and pull the main body, thereby allowing the entire food storage drawer 200 to be pulled out within the mounting cavity. When the entire food storage drawer 200 is fully pushed into the mounting cavity, the drawer door can close the front opening of the receiving space 210, thereby forming a closed receiving space 210.

[0061] In some possible implementations, the food storage drawer 200 is movably disposed within the mounting cavity. When the food storage drawer 200 is in the pushed-in state, it is located within the mounting cavity and can form a negative pressure accommodating space 210, thereby accommodating food items that need to be preserved. When the food storage drawer 200 is in the pulled-out state, it is movable relative to the cabinet body, allowing it to be moved into or out of the mounting cavity for easy access to food items.

[0062] The receiving space 210 has an opening connecting to the outside of the food storage drawer 200. When the food storage drawer 200 is in the pushed-in state, the opening is closed, so that the receiving space 210 is in a negative pressure state. When air is drawn out from the receiving space 210 of the food storage drawer 200, the opening opens, allowing air from the outside of the food storage drawer 200 to enter the receiving space 210, and the food storage drawer 200 changes from the pushed-in state to the pulled-out state, thereby realizing the process of pulling out the food storage drawer 200.

[0063] It is easy to understand that when the food storage drawer 200 is in the pushed-in state, the storage space 210 is in a closed state, and the air flow speed between the storage space 210 and the outside of the food storage drawer 200 is slow, so the food storage drawer 200 can play a better role in preserving food.

[0064] When the food storage drawer 200 is in the pulled-out state, the food storage drawer 200 is movable relative to the box body, and the storage space 210 is connected to the outside of the food storage drawer 200, thereby enabling the process of taking out the food in the storage space 210.

[0065] In some possible implementations, the refrigerator may include a refrigeration system capable of supplying cool air to the storage compartment. The refrigeration system includes a compressor, condenser, expansion valve, and evaporator. A refrigerant circulates among the components of the refrigeration system to achieve the cooling effect.

[0066] For example, the main flow process of refrigerant in various components is as follows: after passing through the compressor, the refrigerant enters the condenser, after passing through the condenser, it enters the expansion valve, after passing through the expansion valve, it enters the evaporator, and after passing through the evaporator, it flows back to the compressor.

[0067] The compressor compresses the refrigerant gas at high temperature and pressure and then discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve causes the high-temperature, high-pressure liquid refrigerant in the condenser to expand into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant that has expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of refrigerant evaporation or heat exchange with the material being cooled.

[0068] In some possible implementations, the food storage drawer 200 may include an air extraction device, the air extraction port of which may communicate with the receiving space 210. When the food storage drawer 200 is in the pushed-in state, the food storage drawer 200 is located in the mounting cavity, and the air extraction device can extract the air from the receiving space 210, so that the receiving space 210 forms a negative pressure state.

[0069] The air extraction device can be configured as a vacuum pump or similar structure to reduce the air content in the containment space 210. Compared to reducing the oxygen content in the containment space 210, reducing the air content in the containment space 210 can reduce the air pressure in the containment space 210, thereby placing the food under negative pressure and further improving the preservation effect of the food.

[0070] For example, each of the storage spaces 210 of the food storage drawer 200 can be equipped with a pressure sensor to obtain the current air pressure of the storage space 210 of the food storage drawer 200 through at least two pressure sensors, so that the current air pressure of the storage space 210 can be obtained more accurately.

[0071] The pressure sensor can be used to obtain the current air pressure of the containment space 210, so that the control module can control the start and stop of the air extraction device and the ion sterilization module according to the current air pressure of the containment space 210.

[0072] When the current air pressure in the containment space 210 is higher than the preset threshold, the input interface of the control valve is connected to the corresponding output interface to control the air extraction device to draw air from the containment space 210.

[0073] In some possible implementations, the control module may be configured to: when the food storage drawer 200 is in the pushed-in state, determine whether the current air pressure of the accommodating space 210 is higher than a pressure threshold, the pressure threshold being determined according to a preset threshold.

[0074] If the current air pressure in the containment space 210 is higher than the pressure threshold, the air extraction device is controlled to extract air from the containment space 210 so that the current air pressure in the containment space 210 is lower than or equal to the preset threshold.

[0075] Specifically, when the food storage drawer 200 is in the pushed-in state, it is determined whether the current air pressure of the storage space 210 is higher than the pressure threshold. The pressure threshold is determined according to a preset threshold, wherein the pressure threshold is higher than the preset threshold.

[0076] If the current air pressure in the containment space 210 starts to exceed the pressure threshold, the air extraction device is controlled to extract air from the containment space 210 so that the current air pressure in the containment space 210 is lower than or equal to the preset threshold, so that the current air pressure in the containment space 210 is always below the pressure threshold, thereby ensuring the preservation effect of the containment space 210 on the food and reducing the possibility of food spoilage.

[0077] The pressure threshold can be determined based on a preset threshold. Furthermore, when the air pressure in the containing space 210 reaches the pressure threshold, the pumping device can be controlled to extract air from the containing space 210, thereby reducing the air pressure in the containing space 210 to below or equal to the preset threshold. The pressure threshold can be higher than the preset threshold. For example, the pressure threshold can be greater than or equal to 1.2 times the preset threshold.

[0078] For example, the preset threshold can be set between 0.6 atm and 0.8 atm. Then the pressure threshold can be set between 0.72 atm and 0.96 atm to ensure that the air pressure in the containment space 210 is always lower than atmospheric pressure.

[0079] It is easy to understand that when the freshness drawer 200 is in the pushed-in state, the current air pressure in the containing space 210 will increase over time. Therefore, it is necessary to use an air extraction device to extract air from the containing space 210 multiple times. The pressure threshold is greater than or equal to 1.2 times the preset threshold. This reduces the number of times the air extraction device extracts air from the containing space 210 while ensuring the freshness preservation effect of the freshness drawer 200, making the control process of the freshness drawer 200 more convenient.

[0080] It should be noted that the control of the air extraction device to draw air from the containing space 210 can be configured in two situations. One situation is configured as follows: when the fresh food drawer 200 changes from the pulled-out state to the pushed-in state, the fresh food drawer 200 is at normal pressure. In this case, the air extraction device can be controlled to draw air from the containing space 210, so that the current air pressure of the containing space 210 can be reduced to below or equal to a preset threshold. For example, the current air pressure of the containing space 210 can be lower than the preset threshold, thereby enabling the containing space 210 to form a negative pressure state.

[0081] Another scenario is set up as follows: when the food storage drawer 200 is in the pushed-in state, the current air pressure of the storage space 210 will increase over time and the storage space 210 will be in a negative pressure state. However, the current air pressure of the storage space 210 is higher than the pressure threshold, so it is necessary to use an air extraction device to extract air from the storage space 210 multiple times so that the current air pressure of the storage space 210 can be reduced back to below or equal to the preset threshold.

[0082] In some possible implementations, the control module can be configured to acquire the leakage rate of the containment space 210 and obtain the initial air pressure of the containment space 210 after the last time the suction device draws air from the containment space 210. The initial air pressure of the containment space 210 can be lower than a preset threshold to extend the interval between two suctions from the containment space 210 by the suction device.

[0083] Alternatively, the initial air pressure of the containment space 210 can be equal to a preset threshold. When the air is drawn from the containment space 210 by the air extraction device and then the air extraction device is turned off, the air pressure of the containment space 210 is the initial air pressure, and the initial air pressure is equal to the preset threshold, so that the control module can more easily obtain the initial values ​​of the two containment spaces 210.

[0084] The initial air pressure can be preset in the control module. That is, when the control module draws air from the containing space 210 through the air extraction device, the control module obtains the current air pressure of the containing space 210. When the current air pressure of the containing space 210 is the preset initial air pressure, the control module controls the air extraction device to close.

[0085] Alternatively, the initial air pressure can be obtained by the control module through calculation or by a pressure sensor. When the air intake device completes the intake of the containing space 210 and then closes the device, the control module can obtain the current air pressure of the containing space 210 through the pressure sensor. The current air pressure of the containing space 210 is the initial air pressure.

[0086] For example, after obtaining the initial air pressure of the receiving space 210 after the last time the air extraction device drew air from the receiving space 210, the method further includes obtaining the current air pressure of the receiving space 210, and obtaining the duration after the last time the air extraction device drew air from the receiving space 210.

[0087] It is easy to understand that the control module can obtain the current air pressure of the containment space 210 through a pressure sensor. The pressure sensor can be used to obtain the current air pressure of the containment space 210, so that the control module can control the start and stop of the air extraction device and the ion sterilization module according to the current air pressure of the containment space 210.

[0088] Furthermore, the control module can determine the duration of the last time the suction device drew air from the receiving space 210 by means of timing or other methods. For example, the control module can obtain the current time and the time when the suction device last drew air from the receiving space 210, and calculate the duration by comparing the current time with the time when the suction device last drew air from the receiving space 210. That is, during the duration, the suction device did not draw air from the receiving space 210.

[0089] After acquiring the current air pressure of the containment space 210 and the duration since the last time the air extraction device drew air from the containment space 210, the control module can also be configured to determine the leakage rate of the containment space 210 based on the initial air pressure, the current air pressure, and the duration.

[0090] As is easy to understand, after the air extraction device draws air from the containing space 210, the current air pressure of the containing space 210 will increase over time, so that the current air pressure of the containing space 210 will gradually increase from the initial air pressure. After a certain period of time, the difference between the current air pressure and the initial air pressure of the containing space 210 is the air pressure change value of the containing space 210.

[0091] The leakage rate of the containment space 210 can be configured as the ratio of the pressure change value of the containment space 210 to the duration. The leakage rate of the containment space 210 can be used to represent the pressure increase value of the containment space 210 per unit time.

[0092] When the initial air pressure is constant, after a certain period of time, the higher the current air pressure in the containing space 210 and the greater the change in air pressure in the containing space 210, the faster the leakage rate of the containing space 210. When the initial air pressure is constant, after a certain period of time, the lower the current air pressure in the containing space 210 and the smaller the change in air pressure in the containing space 210, the slower the leakage rate of the containing space 210.

[0093] In some possible implementations, the control module is configured to: after the air extraction device transitions from the on state to the off state, and after a downtime interval, control the air extraction device to transition from the off state to the on state; the downtime interval is greater than or equal to 1 hour and less than or equal to 6 hours.

[0094] It is easy to understand that after the air extraction device switches from the open state to the closed state, after an interval of downtime, the air extraction device is controlled to switch from the closed state to the open state. This can extend the interval between the two opening processes of the air extraction device, reduce the possibility of damage to the air extraction device, and extend the service life of the air extraction device.

[0095] For example, the downtime is greater than or equal to 1 hour and less than or equal to 6 hours. The downtime can be set to any of the following: 1 hour-2 hours, 2 hours-3 hours, 3 hours-4 hours, 4 hours-5 hours, and 5 hours-6 hours, to extend the service life of the extraction device and reduce the number of times the extraction device is turned on.

[0096] In some possible implementations, the refrigerator also includes a sterilization module, and the control module is configured to acquire the current air pressure of the storage space 210 when the freshness drawer 200 is in the pushed-in state.

[0097] When the current air pressure of the containment space 210 is higher than the preset threshold, the air extraction device is controlled to draw air from the containment space 210; after the air extraction device is controlled to draw air from the containment space 210 to reduce the current air pressure of the containment space 210 to less than or equal to the preset threshold, the ion sterilization module is controlled to release sterilizing ions into the containment space 210.

[0098] If the food storage drawer 200 remains in the pushed-in state, the ion sterilization module is controlled to release sterilizing ions into the containing space 210; during the process of the ion sterilization module releasing sterilizing ions, the air extraction device is controlled not to draw air from the containing space 210.

[0099] It is easy to understand that the suction device is turned off when the current air pressure in the containment space 210 is lower than a preset threshold. When the suction device is off, the current air pressure in the containment space 210 will increase over time, gradually rising to the pressure threshold. By turning off the suction device when the current air pressure in the containment space 210 is lower than the preset threshold, the interval between the two opening and closing processes of the suction device can be extended, thereby reducing the operating frequency of the suction device.

[0100] After the exhaust device is turned off, when the current air pressure in the containment space 210 rises to a preset threshold, the sterilization module is controlled to release sterilizing ions into the containment space 210.

[0101] When the air pressure in the storage space 210 is lower than or equal to a preset threshold, the exhaust device is turned off, and the ion sterilization module is controlled to release sterilizing ions into the storage space 210. This allows the food in the storage space 210 to be sterilized by the sterilizing ions, reducing the possibility of food spoilage. If the fresh food drawer 200 remains in the pushed-in state, the ion sterilization module is controlled to release sterilizing ions into the storage space 210. During the release of sterilizing ions by the ion sterilization module, the exhaust device is controlled not to draw air from the storage space 210, thereby reducing the possibility of sterilizing ions being drawn out of the fresh food drawer 200 by the exhaust device.

[0102] It is easy to understand that when the current air pressure of the containment space 210 is lower than the preset threshold, the exhaust device is turned off; after the exhaust device is turned off, when the current air pressure of the containment space 210 rises to the preset threshold, the sterilization module is controlled to release sterilizing ions into the containment space 210. The air pressure of the containment space 210 increases, the internal environment of the containment space 210 becomes more stable, and the release of sterilizing ions into the containment space 210 makes the activity of sterilizing ions in the containment space 210 more stable, thereby making the concentration control of sterilizing ions more accurate.

[0103] In some possible implementations, after the food is placed in the storage space 210, the food storage drawer 200 can be switched from the pulled-out state to the pushed-in state. The air extraction device is controlled to extract air from the storage space 210 so that the air in the storage space 210 can be discharged to the outside of the food storage drawer 200, so that the air pressure in the storage space 210 is lower than or equal to a preset threshold, and the storage space 210 can form a negative pressure state, thereby preserving the food through the storage space 210 in a negative pressure state.

[0104] For example, when it is necessary to use the food storage drawer 200 to store food, the food storage drawer 200 in the pulled-out state can be pulled out from the installation cavity, and then the food can be placed into the accommodating space 210 of the food storage drawer 200. Then, the food storage drawer 200 containing the food can be placed into the installation cavity, so that the accommodating space 210 is relatively sealed.

[0105] Subsequently, air can be drawn from the sealed storage space 210 by an air extraction device so that the air in the storage space 210 can be discharged to the outside of the fresh food drawer 200, so that the air pressure in the storage space 210 is lower than or equal to a preset threshold, thereby allowing the fresh food drawer 200 to switch from the pulled-out state to the pushed-in state.

[0106] The pressure threshold can be determined based on a preset threshold. Furthermore, when the air pressure in the containing space 210 reaches the pressure threshold, the pumping device can be controlled to extract air from the containing space 210, thereby reducing the air pressure in the containing space 210 to below or equal to the preset threshold. The pressure threshold can be higher than the preset threshold. For example, the pressure threshold can be greater than or equal to 1.2 times the preset threshold.

[0107] For example, the preset threshold can be set between 0.6 atm and 0.8 atm. Then the pressure threshold can be set between 0.72 atm and 0.96 atm to ensure that the air pressure in the containment space 210 is always lower than atmospheric pressure.

[0108] In some possible implementations, the control module may be configured to: when the food storage drawer 200 is in the pushed-in state, determine whether the air pressure in the accommodating space 210 is higher than a pressure threshold, the pressure threshold being determined according to a preset threshold.

[0109] If the air pressure in the containment space 210 is higher than the pressure threshold, the air extraction device is controlled to extract air from the containment space 210 so that the air pressure in the containment space 210 is lower than or equal to the preset threshold.

[0110] Specifically, when the food storage drawer 200 is in the pushed-in state, it is determined whether the air pressure in the storage space 210 is higher than the pressure threshold. The pressure threshold is determined according to a preset threshold, wherein the pressure threshold is higher than the preset threshold.

[0111] If the air pressure in the containment space 210 is higher than the pressure threshold, the air extraction device is controlled to extract air from the containment space 210 so that the air pressure in the containment space 210 is lower than or equal to the preset threshold, so that the air pressure in the containment space 210 is always below the pressure threshold, thereby ensuring the preservation effect of the containment space 210 on the food and reducing the possibility of the food spoiling.

[0112] It is easy to understand that when the freshness drawer 200 is in the pushed-in state, the air pressure in the containing space 210 will increase over time. Therefore, it is necessary to use an air extraction device to extract air from the containing space 210 multiple times. The pressure threshold is greater than or equal to 1.2 times the preset threshold. This reduces the number of times the air extraction device extracts air from the containing space 210 while ensuring the freshness preservation effect of the freshness drawer 200, making the control process of the freshness drawer 200 more convenient.

[0113] In some possible implementations, after the food is placed in the storage space 210, the food storage drawer 200 can be switched from the pulled-out state to the pushed-in state. The air extraction device is controlled to extract air from the storage space 210 so that the air in the storage space 210 can be discharged to the outside of the food storage drawer 200, so that the current air pressure in the storage space 210 is lower than or equal to a preset threshold, and the storage space 210 can form a negative pressure state, thereby preserving the food through the storage space 210 in a negative pressure state.

[0114] For example, when it is necessary to use the food storage drawer 200 to store food, the food storage drawer 200 in the pulled-out state can be pulled out from the installation cavity, and then the food can be placed into the accommodating space 210 of the food storage drawer 200. Then, the food storage drawer 200 containing the food can be placed into the installation cavity, so that the accommodating space 210 is relatively sealed.

[0115] Subsequently, air can be drawn from the sealed storage space 210 by the air extraction device so that the air in the storage space 210 can be discharged to the outside of the fresh food drawer 200, so that the current air pressure of the storage space 210 is lower than or equal to a preset threshold. The pressure sensor can transmit the current air pressure of the storage space 210 to the control module, so that the fresh food drawer 200 can switch from the pulled-out state to the pushed-in state.

[0116] In some possible implementations, the control module may be configured to: when the food storage drawer 200 is in the pushed-in state, determine whether the current air pressure of the accommodating space 210 is higher than a pressure threshold, the pressure threshold being determined according to a preset threshold.

[0117] If the current air pressure in the containment space 210 is higher than the pressure threshold, the air extraction device is controlled to extract air from the containment space 210 so that the current air pressure in the containment space 210 is lower than or equal to the preset threshold.

[0118] Specifically, when the food storage drawer 200 is in the pushed-in state, it is determined whether the current air pressure of the storage space 210 is higher than the pressure threshold. The pressure threshold is determined according to a preset threshold, wherein the pressure threshold is higher than the preset threshold.

[0119] If the current air pressure in the containment space 210 is higher than the pressure threshold, the air extraction device is controlled to extract air from the containment space 210 so that the current air pressure in the containment space 210 is lower than or equal to the preset threshold, so that the current air pressure in the containment space 210 is always below the pressure threshold, thereby ensuring the preservation effect of the containment space 210 on the food and reducing the possibility of food spoilage.

[0120] The pressure threshold can be determined based on a preset threshold. Furthermore, when the air pressure in the containing space 210 reaches the pressure threshold, the pumping device can be controlled to extract air from the containing space 210, thereby reducing the air pressure in the containing space 210 to below or equal to the preset threshold. The pressure threshold can be higher than the preset threshold. For example, the pressure threshold can be greater than or equal to 1.2 times the preset threshold.

[0121] For example, the preset threshold can be set between 0.6 atm and 0.8 atm. Then the pressure threshold can be set between 0.72 atm and 0.96 atm to ensure that the air pressure in the containment space 210 is always lower than atmospheric pressure.

[0122] It is easy to understand that when the freshness drawer 200 is in the pushed-in state, the current air pressure in the containing space 210 will increase over time. Therefore, it is necessary to use an air extraction device to extract air from the containing space 210 multiple times. The pressure threshold is greater than or equal to 1.2 times the preset threshold. This reduces the number of times the air extraction device extracts air from the containing space 210 while ensuring the freshness preservation effect of the freshness drawer 200, making the control process of the freshness drawer 200 more convenient.

[0123] It should be noted that the control of the air extraction device to draw air from the containing space 210 can be configured in two situations. One situation is configured as follows: when the fresh food drawer 200 changes from the pulled-out state to the pushed-in state, the fresh food drawer 200 is at normal pressure. In this case, the air extraction device can be controlled to draw air from the containing space 210, so that the current air pressure of the containing space 210 can be reduced to below or equal to a preset threshold. For example, the current air pressure of the containing space 210 can be lower than the preset threshold, thereby enabling the containing space 210 to form a negative pressure state.

[0124] Another scenario is set up as follows: when the food storage drawer 200 is in the pushed-in state, the current air pressure of the storage space 210 will increase over time and the storage space 210 will be in a negative pressure state. However, the current air pressure of the storage space 210 is higher than the pressure threshold, so it is necessary to use an air extraction device to extract air from the storage space 210 multiple times so that the current air pressure of the storage space 210 can be reduced back to below or equal to the preset threshold.

[0125] Reference Figures 6-11 In some possible implementations, the control module is configured to: control the air extraction device to extract air from the accommodating space 210; and acquire the current air extraction rate of the air extraction device, which is determined based on the air pressure of the preservation drawer 200.

[0126] If the current pumping rate is lower than or equal to the preset rate, the running time of the pumping device is controlled as the reference time.

[0127] If the current air extraction rate is higher than the preset rate, the operating time of the air extraction device is controlled as the adjustment time, which is less than the reference time. In the refrigerator of this embodiment, after food is placed in the storage space 210, the fresh food drawer 200 can be switched from the pulled-out state to the pushed-in state. The air extraction device is controlled to extract air from the storage space 210 so that the air in the storage space 210 can be discharged to the outside of the fresh food drawer 200, so that the air pressure in the storage space 210 is lower than or equal to the preset pressure, and the storage space 210 can form a negative pressure state, thereby preserving the food through the storage space 210 under negative pressure.

[0128] In some possible implementations, the control module may be configured as follows: S101, controlling the air extraction device to extract air from the containment space.

[0129] After the food is placed into the storage space 210, the food storage drawer 200 can be switched from the pulled-out state to the pushed-in state. The air extraction device is controlled to extract air from the storage space 210 so that the air in the storage space 210 can be discharged to the outside of the food storage drawer 200, thereby gradually reducing the air pressure in the storage space 210.

[0130] After the control device extracts air from the accommodating space 210, the control module can be configured to: S102, obtain the current extraction rate of the extraction device, the current extraction rate being determined based on the air pressure of the refrigeration drawer.

[0131] For example, the current suction rate of the suction device can be determined based on the air pressure of the fresh food drawer 200. For instance, the current suction rate of the suction device can be used to represent the rate at which the air pressure of the fresh food drawer 200 decreases.

[0132] The higher the current suction rate of the suction device, the faster the air pressure in the crisper drawer 200 decreases. For example, if the suction device evacuates the crisper drawer 200 for 10 minutes and the air pressure in the crisper drawer 200 decreases by 0.2 atm, then the current suction rate of the suction device can be determined to be 0.02 atm / min.

[0133] The air pressure of the storage space 210 can be obtained by a pressure sensor located in the storage space 210 of the fresh food drawer 200. The amount of air pressure reduction in the storage space 210 of the fresh food drawer 200 can be obtained based on the difference between the two air pressures. The current air extraction rate of the air extraction device can then be determined based on the amount of air pressure reduction and the air extraction time of the fresh food drawer 200.

[0134] Understandably, the current pumping rate of the pumping device is related to the power of the pumping device and the volume of the accommodating space 210. The higher the power of the pumping device, the higher the current pumping rate. The larger the volume of the accommodating space 210, the lower the current pumping rate.

[0135] When too much food is placed in the fresh food drawer 200 (such as when a large number of beverages are placed in the fresh food mode and the drawer is full), the volume of the storage space 210 inside the fresh food drawer 200 will also decrease. Since the suction power of the suction device does not change, the current suction rate of the suction device will increase, which will result in greater noise from the suction device. Furthermore, the suction device is also prone to over-suction of the fresh food drawer 200, causing the air pressure in the fresh food drawer 200 to drop rapidly, and the inner liner 100 of the fresh food drawer 200 may be damaged.

[0136] In related technologies, the system lacks a detection or adjustment mechanism to adjust the vacuuming time in real time. This makes it impossible for the system to reduce the vacuuming time in time under full load conditions. The fixed vacuuming time cannot adapt to pressure changes under different load conditions, resulting in excessively low pressure values ​​inside the food storage drawer 200 under certain circumstances (such as when fully loaded), which may damage the pressure shell of the food storage drawer 200.

[0137] In some possible implementations, in order to reduce the possibility of excessive air intake in the food storage drawer 200 and to enable the food storage drawer 200 to achieve the air intake process more smoothly, the power of the air extraction device or the air extraction time of the air extraction device can be reduced to ensure that the air pressure value of the food storage drawer 200 can be reduced to the required air pressure, thereby reducing the possibility of the air pressure in the food storage drawer 200 dropping too quickly.

[0138] For example, after obtaining the current pumping rate of the pumping device, the control module can be configured as follows: S103, if the current pumping rate is lower than or equal to the preset rate, control the running time of the pumping device to be a reference time. S104, if the current pumping rate is higher than the preset rate, control the running time of the pumping device to be an adjustment time, and the adjustment time is less than the reference time.

[0139] In the refrigerator of this embodiment, after food is placed in the storage space 210, the fresh food drawer 200 can be switched from the pulled-out state to the pushed-in state. The air extraction device is controlled to extract air from the storage space 210 so that the air in the storage space 210 can be discharged to the outside of the fresh food drawer 200, so that the air pressure in the storage space 210 is lower than or equal to the preset pressure, and the storage space 210 can form a negative pressure state, thereby preserving food through the storage space 210 in the negative pressure state.

[0140] The control module can obtain the current air extraction rate of the air extraction device in real time. If there is less food in the storage space 210 and more air is extracted from the storage space 210, the current air extraction rate can be lower than or equal to the preset rate. The system runs the air extraction device according to the reference time to reach the pressure threshold of the air pressure in the freshness drawer 200, and to meet the oxygen content requirements in the storage space 210, thereby extending the preservation time of the food.

[0141] If there is a lot of food in the storage space 210, and less air is extracted from it, the current extraction rate will be higher than the preset rate. The control module can adjust the extraction time to be shorter than the reference time to avoid over-extraction. By shortening the extraction time, the extraction device avoids over-operation after reaching the pressure threshold inside the crisper drawer 200, thus reducing noise. Furthermore, by adjusting the extraction time, the extraction device can prevent over-extraction, preventing excessively low pressure inside the crisper drawer 200 from deforming its outer shell and extending the refrigerator's lifespan.

[0142] It should be noted that the reference time and preset rate can be determined based on the suction time and suction rate of the air extraction device on the fresh food drawer 200 when the fresh food drawer 200 is in an empty state. When the fresh food drawer 200 is in an empty state, the suction time of the air extraction device on the fresh food drawer 200 can be determined based on the initial air pressure and preset pressure of the containing space 210, and the reference time can be determined based on the time it takes for the containing space 210 to decrease from the initial air pressure to the preset pressure.

[0143] In some possible implementations, the control module may be configured to: acquire reference time and preset rate, including: S201, if the refrigeration drawer is empty, when the refrigeration drawer changes from the pulled-out state to the pushed-in state, acquire the initial air pressure of the refrigeration drawer.

[0144] The initial air pressure can be preset in the control module. That is, when the control module draws air from the containing space 210 through the air extraction device, the control module obtains the current air pressure of the containing space 210. When the current air pressure of the containing space 210 is the preset initial air pressure, the control module controls the air extraction device to close.

[0145] Alternatively, the initial air pressure can be obtained by the control module through calculation or by a pressure sensor. When the air intake device completes the intake of the containing space 210 and then closes the device, the control module can obtain the current air pressure of the containing space 210 through the pressure sensor. The current air pressure of the containing space 210 is the initial air pressure.

[0146] For example, after obtaining the initial air pressure of the food storage drawer 200, the control module can be configured to: S202, control the air extraction device to extract air from the containing space.

[0147] S203. When the air pressure in the containment space is lower than or equal to the preset pressure, turn off the air extraction device.

[0148] S204. Obtain the pumping time of the pumping device. The pumping time is a reference time.

[0149] For example, when the food storage drawer 200 is empty, the initial air pressure of the food storage drawer 200 can be 1 atm, and the preset pressure can be set to 0.7 atm. When the air pressure of the storage space 210 is lower than or equal to the preset pressure, the air extraction device is turned off, and the time it takes for the air extraction device to extract air from the storage space 210 of the food storage drawer 200 is recorded to obtain the reference time.

[0150] After obtaining the reference time, the control module is configured as follows: S205, determine the preset rate based on the preset pressure, initial air pressure and pumping time, so as to obtain the preset rate of the reference time.

[0151] With this configuration, the refrigerator in this embodiment of the application can obtain the current air extraction rate of the air extraction device in real time through the control module. If there is less food in the storage space 210 and more air is extracted from the storage space 210, the current air extraction rate can be lower than or equal to the preset rate. The system runs the air extraction device according to the reference time to reach the pressure threshold of the air pressure in the freshness drawer 200, and to meet the oxygen content requirements in the storage space 210, thereby extending the preservation time of the food.

[0152] If there is a lot of food in the storage space 210, and less air is extracted from it, the current extraction rate will be higher than the preset rate. The control module can adjust the extraction time to be shorter than the reference time to avoid over-extraction. By shortening the extraction time, the extraction device avoids over-operation after reaching the pressure threshold inside the crisper drawer 200, thus reducing noise. Furthermore, by adjusting the extraction time, the extraction device can prevent over-extraction, preventing excessively low pressure inside the crisper drawer 200 from deforming its outer shell and extending the refrigerator's lifespan.

[0153] In some possible implementations, the air extraction device is controlled to extract air from the receiving space 210, and the control module is configured to acquire the first air pressure of the fresh food drawer 200 when the fresh food drawer 200 changes from the pulled-out state to the pushed-in state.

[0154] It should be noted that the first air pressure needs to be obtained each time or a specific number of times the fresh food drawer 200 is switched from the pulled-out state to the pushed-in state, while the initial air pressure is obtained once when the fresh food drawer 200 is switched from the pulled-out state to the pushed-in state. During the long-term use of the fresh food drawer 200, the initial air pressure will no longer be obtained, while the first air pressure can be obtained each time or a specific number of times depending on the use of the air extraction device.

[0155] For example, after obtaining the first air pressure of the fresh food drawer 200, the suction device can be kept pumping air from the fresh food drawer 200 for a first duration. For instance, after obtaining the first air pressure of the fresh food drawer 200, the suction power of the suction device is kept constant, and the suction device is controlled to always draw air from the accommodating space 210 of the fresh food drawer 200 for a first duration.

[0156] After the extraction device completes the extraction time for the adjusted duration, the second air pressure of the preservation drawer 200 is obtained; the current extraction rate is determined based on the first air pressure, the second air pressure, and the first duration.

[0157] With this setup, the air extraction device evacuates the storage space 210 for a certain period (first duration), and the control module can obtain the first and second air pressures before and after evacuation. The control module calculates the current evacuation rate and compares it with the preset rate to control and adjust the evacuation time to accommodate different volumes and quantities of food, thus improving the refrigerator's flexibility and adaptability.

[0158] When the storage space 210 contains a large amount of food, the initial suction time of the vacuum device is shortened, reducing excessive operation of the vacuum device and improving the applicability of obtaining the current suction rate. Furthermore, the logic for determining the current suction rate in the control module is relatively simple. It triggers air pressure measurement when the state of the refrigeration drawer 200 changes, records the start and end times of suction, and calculates the air pressure difference, making it easy to understand and implement.

[0159] In some possible implementations, the first duration can be greater than or equal to 20% of the reference time and less than or equal to 30% of the reference time. For example, the first duration can be set within any range of 20%-22%, 22%-24%, 24%-26%, 26%-28%, and 28%-30% of the reference time.

[0160] With this setting, the first duration is less than or equal to 30% of the reference time. This avoids excessive suction by the vacuum device, saving energy consumption. At the same time, it prevents deformation of the outer shell of the crisper drawer 200 due to excessively low pressure caused by the vacuum device's prolonged suction time, thus extending the refrigerator's lifespan.

[0161] In some possible implementations, the air extraction device is controlled to extract air from the receiving space 210, and the control module is configured to acquire the first air pressure of the fresh food drawer 200 when the fresh food drawer 200 changes from the pulled-out state to the pushed-in state.

[0162] For example, after obtaining the first air pressure of the food storage drawer 200, the air extraction device is controlled to extract air from the food storage drawer 200; when the current air pressure of the food storage drawer 200 drops to the second air pressure, a second duration is obtained. The current extraction rate is determined based on the first air pressure, the second air pressure, and the second duration.

[0163] This configuration allows for the extraction of air from the storage space 210 via an extraction device. When the current air pressure in the crisper drawer 200 drops to a second air pressure, a second time interval is recorded. This controls the value of the second air pressure, preventing excessive pressure drops that could lead to high noise levels and deformation of the crisper drawer's outer shell. When storing a large amount of food in the storage space 210, adjusting the second air pressure reduces excessive operation of the extraction device and improves the applicability of obtaining the current extraction rate.

[0164] For example, the second pressure can be greater than or equal to 90% of the first pressure and less than or equal to 95% of the first pressure. For instance, the second pressure can be set within any range of 90%-91%, 91%-92%, 92%-93%, 93%-94%, and 94%-95% of the first pressure.

[0165] With this configuration, the second air pressure is greater than or equal to 90% of the first air pressure. The air extraction device will not excessively reduce the air pressure inside the fresh food drawer 200 during the air extraction process, thereby avoiding deformation of the outer shell of the fresh food drawer 200.

[0166] The second pressure is less than or equal to 95% of the first pressure. This ensures that there is a certain pressure difference in the air pumped by the pumping device, avoiding insignificant pressure changes that could affect the accuracy of the current pumping rate calculation.

[0167] In some possible implementations, the control module is configured to reduce the pumping power of the pumping device if the current pumping rate is higher than the preset rate, so that the current pumping rate is equal to or approximately equal to the preset rate.

[0168] This design reduces the power of the air extraction device, thus avoiding excessive air extraction, which helps save energy consumption of the air extraction device and prevents noise caused by deformation of the outer shell of the food storage drawer 200.

[0169] In some possible implementations, the control module is configured to: control the air extraction device to extract air from the receiving space 210 when the food storage drawer 200 changes from the pulled-out state to the pushed-in state; when the door closes the storage compartment, obtain the closing time of the door closing the storage compartment; if the closing time is longer than the set closing time, control the air extraction device to extract air from the receiving space 210 at a first air extraction rate, the first air extraction rate being greater than the preset air extraction rate.

[0170] If the sealing time is less than or equal to the set sealing time, the air extraction device is controlled to extract air from the accommodating space 210 at a second air extraction rate, which is less than the preset air extraction rate.

[0171] By adopting the above technical solution, if the sealing time is longer than the set sealing time, it can be determined that the refrigerator is in holiday mode, and the noise of the refrigerator will not affect the user's life. The air extraction device is controlled to extract air from the containing space 210 at a first air extraction rate, which is greater than the preset air extraction rate, thereby reducing the current air pressure in the containing space 210, achieving the required oxygen content in the containing space 210, and extending the storage time of food.

[0172] If the closing time is less than the set closing time, the refrigerator is in normal operating condition, and the noise from the refrigerator may affect the user's life. The air extraction device is controlled to extract air from the storage space 210 at a second extraction rate, which is less than the preset extraction rate. This reduces the extraction rate of the air extraction device, preventing over-extraction and ensuring that the pressure inside the crisper drawer 200 is not too low, thus preventing deformation of the crisper drawer's outer shell and extending the refrigerator's lifespan.

[0173] In some possible implementations, the first pumping rate is greater than or equal to 1.1 times the preset pumping rate and less than or equal to 1.3 times the preset pumping rate.

[0174] With this setting, the first suction rate is greater than or equal to 1.1 times the preset suction rate and less than or equal to 1.3 times the preset suction rate, thereby ensuring the rate at which the current air pressure in the containment space 210 decreases, reducing the current air pressure in the containment space 210, meeting the oxygen content requirements in the containment space 210, and extending the preservation time of the food.

[0175] In some possible implementations, the second pumping rate is greater than or equal to 0.8 times the preset pumping rate and less than or equal to 0.9 times the preset pumping rate.

[0176] With this setting, the second suction rate is greater than or equal to 0.8 times the preset suction rate and less than or equal to 0.9 times the preset suction rate. The preset suction rate is equal to the ratio of the difference between the initial air pressure and the preset pressure to the suction time. In other words, the ratio of the air pressure value of the food storage drawer 200 before suction and the preset pressure reached after suction to the suction time to reach the preset pressure is the reference rate.

[0177] The second suction rate is greater than or equal to 0.8 times the preset suction rate and less than or equal to 0.9 times the preset suction rate. This value is used to distinguish the amount of food stored in the refrigerator drawer 200. By setting the preset suction rate, it can be ensured that in most cases where food is stored in the refrigerator drawer 200 (especially when the amount of food is small), the suction device can perform suction at a slower rate, avoiding excessive suction which would cause loud noise and high energy consumption.

[0178] In some possible implementations, the control module is configured to: determine a preset pumping rate, including:

[0179] If the food storage drawer 200 is empty, when the food storage drawer 200 changes from the pulled-out state to the pushed-in state, the initial air pressure of the food storage drawer 200 is obtained; the air extraction device is controlled to extract air from the receiving space 210; when the air pressure in the receiving space 210 is lower than or equal to the preset pressure, the air extraction device is turned off.

[0180] Obtain the pumping time of the pumping device; determine the preset pumping rate based on the preset pressure, initial air pressure, and pumping time.

[0181] With this setup, the current air extraction rate of the air extraction device can be obtained in real time through the control module. If there is less food in the storage space 210 and more air is extracted from the storage space 210, the current air extraction rate can be lower than or equal to the preset rate. The system runs the air extraction device according to the reference time to reach the pressure threshold of the air pressure in the freshness drawer 200, and to meet the oxygen content requirements in the storage space 210, thereby extending the preservation time of the food.

[0182] If there is a lot of food in the storage space 210, and less air is extracted from it, the current extraction rate will be higher than the preset rate. The control module can adjust the extraction time to be shorter than the reference time to avoid over-extraction. By shortening the extraction time, the extraction device avoids over-operation after reaching the pressure threshold inside the crisper drawer 200, thus reducing noise. Furthermore, by adjusting the extraction time, the extraction device can prevent over-extraction, preventing excessively low pressure inside the crisper drawer 200 from deforming its outer shell and extending the refrigerator's lifespan.

[0183] In some possible implementations, the closure time is set to be greater than or equal to 24 hours.

[0184] With this setting, the closing time is greater than or equal to 24 hours, ensuring that the refrigerator is in holiday mode, thus ensuring that the refrigerator's noise will not affect the user's normal use.

[0185] In some possible implementations, if the sealing time is longer than the set sealing time, the control module is configured to: control the air extraction device to extract air from the accommodating space 210; obtain the current air extraction rate of the air extraction device, which is determined based on the air pressure of the preservation drawer 200; and if the current air extraction rate is higher than the preset rate, control the running time of the air extraction device as a reference time.

[0186] And / or, if the sealing time is less than the set sealing time, the control module is configured to: control the air extraction device to extract air from the accommodating space 210; obtain the current air extraction rate of the air extraction device, which is determined based on the air pressure of the preservation drawer 200; if the current air extraction rate is higher than the preset rate, control the air extraction device to run for less than the reference time.

[0187] With this configuration, the refrigerator in this embodiment can obtain the current suction rate of the suction device in real time through the control module. If there is a lot of food in the storage space 210 and less air is extracted from the storage space 210, the current suction rate can be higher than the preset rate. The system operates the suction device according to the reference time to reach the pressure threshold of the air pressure in the freshness drawer 200, and to meet the oxygen content requirements in the storage space 210, thereby extending the preservation time of the food. If the closing time is longer than the set closing time, it can be determined that the refrigerator is in holiday mode, and the noise of the refrigerator will not affect the user's life.

[0188] If there is a lot of food in the storage space 210, and less air is extracted from it, the current extraction rate will be higher than the preset rate. The control module can adjust the extraction time to be shorter than the reference time to avoid over-extraction. By shortening the extraction time, the extraction device avoids over-operation after reaching the pressure threshold inside the crisper drawer 200, thus reducing noise. Furthermore, by adjusting the extraction time, the extraction device can prevent over-extraction, preventing excessively low pressure inside the crisper drawer 200 from deforming its outer shell and extending the refrigerator's lifespan.

[0189] In some possible implementations, the control module is configured as follows:

[0190] When the food storage drawer 200 changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the accommodating space 210 at a first duty cycle, which is less than the preset duty cycle.

[0191] When the pumping time of the pumping device is greater than or equal to the first judgment time, the current air pressure of the containing space 210 is obtained;

[0192] If the current air pressure is higher than the preset pressure and the door closes the storage room, the air extraction device is controlled to extract air from the storage space 210 at a second duty cycle, which is greater than the preset duty cycle.

[0193] By adopting the above technical solution, when the crisper drawer 200 changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the receiving space 210 at a first duty cycle, which is less than a preset duty cycle. It is easy to understand that when the crisper drawer 200 begins to change from the pulled-out state to the pushed-in state, the refrigerator door is usually in the open state. By controlling the air extraction device to extract air from the receiving space 210 at the first duty cycle, the air extraction device can extract air from the receiving space 210 at a smaller duty cycle, reducing the noise generated during the air extraction process.

[0194] When the suction time of the suction device is greater than or equal to the first judgment time, the current air pressure of the storage space 210 is obtained; if the current air pressure is higher than the preset pressure, it means that the air pressure in the storage space 210 has not reached the required set pressure, and the suction device needs to continue to be controlled to suction air from the storage space 210. When the door closes the storage room, the door can play a certain sealing and sealing effect on the fresh food drawer 200 located in the storage room, thereby reducing the possibility of noise generated by the fresh food drawer 200 and the suction device.

[0195] The suction device can be controlled to extract air from the receiving space at a second duty cycle, which is greater than a preset duty cycle. This increases the suction efficiency of the suction device and shortens the time it takes to extract air from the receiving space. Compared to related technologies, in the refrigerator of this embodiment, when the door is open, the suction device is controlled to extract air from the receiving space at a first duty cycle; when the door is closed, the suction device is controlled to extract air from the receiving space at a second duty cycle. This correspondence between the door and the suction device ensures that the process of extracting air from the receiving space 210 does not generate significant noise, thereby improving the user experience of the suction device.

[0196] The duty cycle is the ratio of the energized time of the pumping device to the pumping cycle in one pumping cycle, and is used to refer to the pumping time of the pumping device.

[0197] In some possible implementations, the control module is configured to: determine a preset duty cycle, including:

[0198] If the food storage drawer 200 is empty, when the food storage drawer 200 changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the accommodating space 210, and the air extraction time is the first judgment time.

[0199] If the current noise level of the food storage drawer 200 is higher than the set noise level, the air extraction device is controlled to maintain the current duty cycle, which is the preset duty cycle.

[0200] With this configuration, when the food storage drawer 200 is empty, when the food storage drawer 200 changes from the pulled-out state to the pushed-in state, the air extraction device can be controlled to extract air from the accommodating space 210, and the air extraction time can be the first judgment time; if the current noise intensity of the food storage drawer 200 is higher than the set noise intensity, the air extraction device is controlled to maintain the current duty cycle, and the current duty cycle is the preset duty cycle.

[0201] In other words, the air extraction device is controlled to extract air from the accommodating space 210 at a preset duty cycle, and the extraction time is the first judgment time. This ensures that the process of the air extraction device extracting air from the accommodating space 210 at a preset duty cycle can meet the air pressure requirements of the accommodating space 210. Furthermore, the preset duty cycle of the air extraction device reduces the noise generated during the extraction process, and the noise generated during the extraction process is less than the set noise intensity.

[0202] In some possible implementations, the first duty cycle is greater than 0.3 times the preset duty cycle and less than or equal to 0.6 times the preset duty cycle.

[0203] With this setting, the first duty cycle is less than or equal to 0.6 times the preset air extraction rate, which ensures that when the door is open, the air extraction device will not generate much noise during the air extraction process from the accommodating space 210 at the first duty cycle. The first duty cycle is greater than 0.3 times the preset duty cycle, which ensures that the air extraction efficiency of the air extraction device from the accommodating space 210 is not too low, so that the air extraction device can extract air stably from the accommodating space 210.

[0204] In some possible implementations, the second duty cycle is greater than 1.2 times the preset duty cycle and less than or equal to 2 times the preset duty cycle.

[0205] With this setting, the second duty cycle is greater than 1.2 times the preset duty cycle and less than or equal to 2 times the preset duty cycle, which enables the air extraction device to extract air from the receiving space 210 more quickly and improves the air extraction efficiency of the air extraction device from the receiving space 210.

[0206] In some possible implementations, when the air extraction device is controlled to extract air from the receiving space 210 at a second duty cycle, the control module is configured as follows:

[0207] The current suction rate of the suction device is obtained, and the current suction rate is determined based on the air pressure of the fresh food drawer 200.

[0208] If the current pumping rate is lower than the preset rate, the operating time of the pumping device is controlled to be the second judgment time, which is less than the first judgment time.

[0209] If the current pumping rate is higher than the preset rate, the operating time of the pumping device is controlled as the control duration, which is less than the second judgment time.

[0210] With this setup, the current air extraction rate of the air extraction device can be obtained in real time through the control module. If there is less food in the storage space 210 and more air is extracted from the storage space 210, the current air extraction rate can be lower than or equal to the preset rate. The system runs the air extraction device according to the reference time to reach the pressure threshold of the air pressure in the freshness drawer 200, and to meet the oxygen content requirements in the storage space 210, thereby extending the preservation time of the food.

[0211] If there is a lot of food in the storage space 210, and less air is extracted from the storage space, the current extraction rate will be higher than the preset rate. The control module can adjust the extraction time to be shorter than the reference time to avoid over-extraction. By shortening the extraction time, the extraction device avoids over-operation after reaching the pressure threshold inside the crisper drawer 200, thus reducing noise. Furthermore, by adjusting the extraction time, the extraction device can avoid over-extraction, preventing excessively low pressure inside the crisper drawer 200 from deforming the outer shell and extending the refrigerator's lifespan.

[0212] In some possible implementations, the control module is configured to: control the air extraction device to extract air from the containment space when the food drawer changes from a pulled-out state to a pushed-in state; and reduce the current duty cycle of the air extraction device based on the current air pressure in the containment space.

[0213] Obtain the first vibration frequency of the air extraction device and the second vibration frequency of the housing; if the ratio of the first vibration frequency to the second vibration frequency is within a set range, increase the current duty cycle of the air extraction device.

[0214] When the air extraction device draws air from the storage space of the refrigerator drawer, the air pressure in the storage space gradually decreases. As a result, if the current duty cycle of the air extraction device remains unchanged, the refrigerator drawer and the inner liner may deform, causing the noise generated by the refrigerator drawer to increase continuously. Therefore, the current duty cycle of the air extraction device can be reduced according to the current air pressure in the storage space, thereby reducing the noise generated by the air extraction device.

[0215] For example, a first vibration frequency of the vacuum device and a second vibration frequency of the refrigerator body are obtained. If the ratio of the first vibration frequency to the second vibration frequency is within a set range, resonance may easily occur between the vacuum device and the refrigerator body, thereby further increasing the noise generated by the vacuum device and the refrigerator body. In other words, when the current duty cycle of the vacuum device decreases to a certain value, resonance may occur between the vacuum device and the refrigerator body. Therefore, the current duty cycle of the vacuum device can be increased to reduce the possibility of resonance between the vacuum device and the refrigerator body, and further reduce the noise generated by the vacuum device.

[0216] For example, the set range is greater than or equal to 0.9 and less than or equal to 1.1. For instance, the set range can be any of the following: 0.9-0.94, 0.94-0.98, 0.98-1.02, 1.02-1.06, and 1.06-1.1.

[0217] The control module is configured such that when the food storage drawer changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the storage space at a first duty cycle, which is less than a preset duty cycle.

[0218] The control module is configured as follows: The control module is configured to determine the preset duty cycle, including: if the fresh food drawer is empty, when the fresh food drawer changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the accommodating space, and the air extraction time is the first judgment time; if the current noise intensity of the fresh food drawer is higher than the set noise intensity, the air extraction device is controlled to maintain the current duty cycle, and the current duty cycle is the preset duty cycle.

[0219] The control module is configured to increase the current duty cycle of the air extraction device, including controlling the air extraction device to extract air from the accommodating space at a second duty cycle, the second duty cycle being greater than a preset duty cycle.

[0220] The refrigerator also includes a first vibration sensor and a second vibration sensor;

[0221] The first vibration sensor is installed in the housing. The first vibration sensor is used to obtain the first vibration frequency of the air extraction device. The first vibration sensor is electrically connected to the control module so as to output the first vibration frequency to the control module through the first vibration sensor.

[0222] The second vibration sensor is installed in the housing. The second vibration sensor is used to obtain the second vibration frequency of the housing. The second vibration sensor is electrically connected to the control module so as to output the second vibration frequency to the control module.

[0223] Secondly, this application provides a refrigerator control method, comprising: controlling an air extraction device to extract air from the storage space when the fresh-keeping drawer changes from a pulled-out state to a pushed-in state; reducing the current duty cycle of the air extraction device according to the current air pressure of the storage space; acquiring a first vibration frequency of the air extraction device and acquiring a second vibration frequency of the refrigerator body; increasing the current duty cycle of the air extraction device if the difference between the first vibration frequency and the second vibration frequency is less than a set range.

[0224] This application also provides a computer-readable storage medium, which may include various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. Specifically, the computer-readable storage medium stores computer-executable instructions, which are executed by a computer to implement the technical solutions shown in the above-described method embodiments.

[0225] This application also provides a program product, which includes executable instructions stored in a readable storage medium. When the computer program is executed by a computer, the technical solution shown in the above method embodiments is executed. The specific implementation method and technical effect are similar, and will not be repeated here.

[0226] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0227] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator characterized by comprising: include: Box; A food preservation drawer is provided in the box body, and the food preservation drawer has a push-in state and a pull-out state; When the food storage drawer is in the pushed-in state, the storage space of the food storage drawer is in a sealed state; When the food preservation drawer is in the pulled-out state, the food preservation drawer can move relative to the refrigerator body; An air extraction device is connected to the receiving space, and the air extraction device is used at least to extract air from the receiving space. The control module is configured as follows: When the food storage drawer changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the containing space. Based on the current air pressure in the containment space, reduce the current duty cycle of the air extraction device; Obtain the first vibration frequency of the air extraction device and the second vibration frequency of the housing; If the ratio of the first vibration frequency to the second vibration frequency is within a set range, the current duty cycle of the air extraction device is increased.

2. The refrigerator according to claim 1, characterized in that, The set range is greater than or equal to 0.9 and less than or equal to 1.

1.

3. The refrigerator according to claim 1, characterized in that, The control module is configured as follows: When the food storage drawer changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the storage space at a first duty cycle, which is less than a preset duty cycle.

4. The refrigerator according to claim 3, characterized in that, The control module is configured to: determine the preset duty cycle, including: If the food storage drawer is empty, when the food storage drawer changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the containing space, and the air extraction time is the first judgment time. If the current noise level of the food storage drawer is higher than the set noise level, the air extraction device is controlled to maintain the current duty cycle, which is the preset duty cycle.

5. The refrigerator according to claim 3, characterized in that, The control module is configured to increase the current duty cycle of the air extraction device, including: The air extraction device is controlled to extract air from the containment space at a second duty cycle, which is greater than a preset duty cycle.

6. The refrigerator according to claim 5, characterized in that, The first duty cycle is greater than 0.3 times the preset duty cycle and less than or equal to 0.6 times the preset duty cycle; The second duty cycle is greater than 1.2 times the preset duty cycle and less than or equal to 2 times the preset duty cycle.

7. The refrigerator according to claim 1, characterized in that, The control module is configured such that when the food storage drawer is in the pushed-in state... Determine whether the air pressure in the containment space is higher than a pressure threshold, wherein the pressure threshold is determined based on a preset pressure; If the air pressure in the containment space is higher than the pressure threshold, the air extraction device is controlled to extract air from the containment space so that the air pressure in the containment space is lower than or equal to the preset pressure.

8. The refrigerator according to any one of claims 1 to 7, characterized in that, The refrigerator also includes a first vibration sensor and a second vibration sensor; The first vibration sensor is disposed in the housing, and the first vibration sensor is used to at least obtain the first vibration frequency of the air extraction device. The first vibration sensor is electrically connected to the control module. The second vibration sensor is disposed in the housing and is used to acquire at least the second vibration frequency of the housing. The second vibration sensor is electrically connected to the control module. 9.A control method of a refrigerator, characterized by, When the food storage drawer changes from the pulled-out state to the pushed-in state, the air extraction device is controlled to extract air from the containing space. Based on the current air pressure in the containment space, reduce the current duty cycle of the air extraction device; Obtain the first vibration frequency of the air extraction device and the second vibration frequency of the housing; If the difference between the first vibration frequency and the second vibration frequency is less than a set range, the current duty cycle of the pumping device is increased.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions that, when executed by a processor, implement the method of claim 9.

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